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Finding the Fourth Proportional to 26,937.45, 40,408.91 and 7,218

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Solution

The fourth proportional to 26,937.45, 40,408.91 and 7,218 is: 10,827.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,937.45 : 40,408.91 = 7,218 : x
  2. Step 2: Convert to fraction form
    26,937.45/40,408.91 = 7,218/x
  3. Step 3: Cross multiply
    26,937.45x = 40,408.91 × 7,218
  4. Step 4: Simplify right side
    26,937.45x = 291,671,476.29
  5. Step 5: Solve for x
    x = 291,671,476.29/26,937.45
  6. Step 6: Final answer
    x = 10,827.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.